Fireplace damper



Jan. 10, 1928.

' I A. NELSON FIREPLACE DAMPER Filed Oct. 17, 1927 H!" II ll c IN VEN TOR.

i atented Jan. 10, 1928.

- ALBERT: NELSON; OF: SAN FRLAiNCIEiGQ; CHLIEORNIEA.

Jamareon DAMPER.

Application filed October 17, 1927. Serial 226,606!

This invention relates.- to a fire place damper, and its ob ect is to provide a damper which will be so placed as not to interfere with the draft of the fire place, andto also a be so placed as to secure sired position.

It will be understood by those slnlled n it easily in the dethe art that it is common to build fire places with the lower. part of the chimney of solid 1 brick, while: thisbri'clr only extends a short distance above the mantel, or in some cases as high as the ceiling, but from a point close to the top oi the opening of the fire place a so called patent flue is used.

This patent flue consists oi an interior fire clay pipe with an exterior galvanized pipe spaced a short distance from the interior pipe to give suitable insulation space.

These so called patent fines must rest 20 upon some foundations, and ordinarily acast iron plate is used for the support of said flue and this same-plate is made use of for the support of the damper thereby allowing a suihcient amount of open chamber space a 556 short distance above the top of the throat or the tire place to not interfere with the drawing qualities of the flue.

Other objects of the inventionwill be apparent as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout the several figures of the drawings and of which there may be modias fications.

Figure l is a vertical sectional view through a brick fire place showing the patent due in place, and showing the damper wide open,

Figure 2 is a plan view of the supporting plate for the patent flue,

Figure 3 is a side elevation of the sup porting plate shown in Figure 2, a portion being broken away to show the lugs for holdat ing the clay pipe central,

Figure t is a vertical sectional view through the damper holding ring, and

Figure is a plan view of the damper holding ring.

The numeral 1 indicates the fire place; 2 the throat fluent the fire place; 3 the back Wall of the fire place; 4; the front fire place wall; 5 the fire place mantel slab and 6 the chimney. The numeral 7 indicates the clay tilt) till nized pipes;

Th rrir rest upon the plates This plate is flat and has a "circular flange '10 with a series of lugs pipe outside of which placed the galva- 11 which holdthe clay pipe in the proper position;

7 and'the galvanized pipe 8 PATENT OFFICE.

It will be understood by those skilled in the artthat the clay pipe is placed inside the lugsll while the galvanized pipe Sis placed just inside" the flange 10 to allow the necessary insulation space to prevent overheating the galvanized pipe.

The plate 9 has four holes 12 to 15 there in, which holes are placed in the proper position to meet the holes 16 to 19 in the lugs 20 to 23 of the damper ring 24. On one side the damper ring 24 has a shallow groove 26 to receive the pivot 27 of the damper 28.

The damper 28 is of the common butterfly valve type with a supporting pivot pin 29 on the side opposite from the pin 27, the latter pin having a socket in which the squared rod 30 is secured by means of the set screw 31. The damper ring has a lug 32 on which the damper rests when it is turned horizon tally, and it has a lug 33 to prevent the damper from being turned beyond the position shown in Figure 1.

In practice the damper rod 30 is installed in a tube 34- which is built into the brick work of the chimney and a socket handle 35 just underthe mantel sleeve is used to turn the damper, a set screw 36 holding the handle and rod 30 together. In practice it will be seen that the damper is installedhigh enough above the fire place throat 2 to not interfere with the draft and it can be con veniently adjusted to any desired position by the'use of the handle 35 which is installed in the most convenient position, either that shown, or in some other position dependent upon the shape of the chimney and mantel.

It will alsobe seen that the damper can be placed in position in the ring before it is assembled in place by. putting the pivot pin 29 through the opening therefor in the ring and then allowing the pivot pin 27 to pass downwardly to its seat through the groove 26. The supporting ring 24: is bolted to the underside of the plate 9.

Having thus described my invention, what I desire to secure by Letters Patent of the United States is as follows, but modifications may be made in carrying out the invention asshown in-the drawings and in the above particularly described form thereof, within the purview of the annexed claims.

front of the fireplace.

- 2. A damper, forfire places comprising the combination with the chimney and its throat butterfly valve in said damper ring,l extending therefrom outside the e of a flue supporting plate, a damper ring carried by'said flue supporting plate, a a rod and a handle for-operating the rod whereby the damper may .be adjusted in position.

3. Achimneyldamper comprising the comimney,

bination with a chimney having a fire place and throat of a flue supporting plate about the throat and smoke chamber of the chimney, a damper ring carried below the flue supporting plate, a damper carried by the ring, and means extending outside the chimney for the operation of the damper.

4. A chimney damper comprising the combination with a chimney having a fire place with a constricted throat and enlarged smoke chamber, a flue supporting plate above the smoke chamber, a flue supported thereby, a damper ring carried by said plate, a damper .pivotally supported in said ring,

.and a handle extending through the chamber for the regulation of the damper.

In testimony whereof I have hereunto set myhand this 10 day of October, A. D.

ALBERT NELSON. 

